Java压缩文件工具类ZipUtil使用方法代码示例

本文实例通过Java的Zip输入输出流实现压缩和解压文件，前一部分代码实现获取文件路径，压缩文件名的更改等，具体如下：

package com.utility.zip;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import com.utility.io.IOUtil;
/**
* 通过Java的Zip输入输出流实现压缩和解压文件
*
* @author liujiduo
*
*/
public final class ZipUtil {
private ZipUtil() {
// empty
}
/**
  * 压缩文件
  *
  * @param filePath
  *      待压缩的文件路径
  * @return 压缩后的文件
  */
public static File zip(String filePath) {
File target = null;
File source = new File(filePath);
if (source.exists()) {
// 压缩文件名=源文件名.zip
String zipName = source.getName() + ".zip";
target = new File(source.getParent(), zipName);
if (target.exists()) {
target.delete();
// 删除旧的文件
}
FileOutputStream fos = null;
ZipOutputStream zos = null;
try {
fos = new FileOutputStream(target);
zos = new ZipOutputStream(new BufferedOutputStream(fos));
// 添加对应的文件Entry
addEntry("/", source, zos);
}
catch (IOException e) {
throw new RuntimeException(e);
}
finally {
IOUtil.closeQuietly(zos, fos);
}
}
return target;
}
/**
  * 扫描添加文件Entry
  *
  * @param base
  *      基路径
  *
  * @param source
  *      源文件
  * @param zos
  *      Zip文件输出流
  * @throws IOException
  */
private static void addEntry(String base, File source, ZipOutputStream zos)
     throws IOException {
// 按目录分级，形如：/aaa/bbb.txt
String entry = base + source.getName();
if (source.isDirectory()) {
for (File file : source.listFiles()) {
// 递归列出目录下的所有文件，添加文件Entry
addEntry(entry + "/", file, zos);
}
} else {
FileInputStream fis = null;
BufferedInputStream bis = null;
try {
byte[] buffer = new byte[1024 * 10];
fis = new FileInputStream(source);
bis = new BufferedInputStream(fis, buffer.length);
int read = 0;
zos.putNextEntry(new ZipEntry(entry));
while ((read = bis.read(buffer, 0, buffer.length)) != -1) {
zos.write(buffer, 0, read);
}
zos.closeEntry();
}
finally {
IOUtil.closeQuietly(bis, fis);
}
}
}
/**
  * 解压文件
  *
  * @param filePath
  *      压缩文件路径
  */
public static void unzip(String filePath) {
File source = new File(filePath);
if (source.exists()) {
ZipInputStream zis = null;
BufferedOutputStream bos = null;
try {
zis = new ZipInputStream(new FileInputStream(source));
ZipEntry entry = null;
while ((entry = zis.getNextEntry()) != null
           && !entry.isDirectory()) {
File target = new File(source.getParent(), entry.getName());
if (!target.getParentFile().exists()) {
// 创建文件父目录
target.getParentFile().mkdirs();
}
// 写入文件
bos = new BufferedOutputStream(new FileOutputStream(target));
int read = 0;
byte[] buffer = new byte[1024 * 10];
while ((read = zis.read(buffer, 0, buffer.length)) != -1) {
bos.write(buffer, 0, read);
}
bos.flush();
}
zis.closeEntry();
}
catch (IOException e) {
throw new RuntimeException(e);
}
finally {
IOUtil.closeQuietly(zis, bos);
}
}
}
public static void main(String[] args) {
String targetPath = "E:\\Win7壁纸";
File file = ZipUtil.zip(targetPath);
System.out.println(file);
ZipUtil.unzip("F:\\Win7壁纸.zip");
}
}

下面是通过IO流工具类实现关闭一个或多个流对象的Java语言描述，获取可关闭的流对象列表，具体如下：

package com.utility.io;
import java.io.Closeable;
import java.io.IOException;
/**
* IO流工具类
*
* @author liujiduo
*
*/
public class IOUtil {
/**
  * 关闭一个或多个流对象
  *
  * @param closeables
  *      可关闭的流对象列表
  * @throws IOException
  */
public static void close(Closeable... closeables) throws IOException {
if (closeables != null) {
for (Closeable closeable : closeables) {
if (closeable != null) {
closeable.close();
}
}
}
}
/**
  * 关闭一个或多个流对象
  *
  * @param closeables
  *      可关闭的流对象列表
  */
public static void closeQuietly(Closeable... closeables) {
try {
close(closeables);
}
catch (IOException e) {
// do nothing
}
}
}

来源：https://www.cnblogs.com/mao2080/p/7435268.html